Machine or apparatus for surfacing roads



June 13, 195@ G.- JAEGER MACHINE 0R APPARATUS FOR SURFACING ROADS 2Sheets-Sheet 1 Filed Nov. 27, 1944 la Hi @42- INVENTOR. Gebhara Jaeger WI arm TTORNEYS June 13, 1950 s. JAEGER MACHINE OR APPARATUS FORSURFACING ROADS 2 Sheets-Sheet 2 Filed Nov. 27, 1944 INVENTOR. GebhardJaege/r WWW TOPNEYS Patented June 13, 1950 MACHINE R APPARATUS FORSURFACING ROADS Gebhard J aeger, Columbus, Ohio, asslg'nor to The JaegerMachine Company, Columbus, Ohio, a

corporation of Ohio Application November 27, 1944, Serial No. 565,305

6 Claims. (01. 94-45) My present invention relates to a machine orapparatus for surfacing roads, such as new roads where forms are used orfor resurfacing the original road surface. It has to do moreparticularly with an oscillating compactor which is adapted to beassociated with the screed or screed unit of any conventional type ofmachine or apparatus of the foregoing character.

One of the objects of my invention is to provide an oscillatingcompactor unit which is adapted to be used directly on the forward faceor portion of a screed, such as a fixed, dead, or non-oscillatingscreed.

Another object of my invention is to provide a compactor of theoscillating type which is formed in two sections constituting twoupright plates mounted end to end which are adapted to be moved at highspeed endwise and up and down relative to one another and in unison.

A further object of my invention is to provide an improved compactorunit comprising two oscillatable plates positioned end to end, whichplates are adapted to have imparted thereto end-. wise motion lengthwiseof the screed, which motion results in a wiping action upon the surfaceto be finished.

Another object of my invention is to provide a compactor of theforegoing character capable of being oscillatable at high speed withoutimpair-. ing the operation of the machine or apparatus of which it formsa part.

Another object of the invention is to provide a machine or apparatus ofthe foregoing character in which the screed and oscillating compactorare capable of adjustment angularly with relation to the road surfaceand wherein the screed may be readily adjusted to the desired crown.

A further object of my invention is to provide an oscillating compactorWhich, in operation, serves to crowd out stones or other objects whichmight tend to interfere with the proper functioning or operation of theapparatus.

Another object of my invention is to provide an oscillating compactorwhich is associated with a screed unit and which has a pair ofvertically disposed plates or blade members having endwise movement inopposite directions lengthwise of the screed to produce a wiping actionupon the surface to be finished by the screed and also up and downmovement at high speed to effect the compaction of the materialimmediately preceding the engagement of said material by the screed.

A further object of the invention is to provide an improved oscillatingcompactor formed in two sections capable of high speed up and down andendwise movement lengthwise of the screed in association with a screedof the dead or nonoscillating type whose forward or lead portion ishigher than its rear or trailing portion.

Another object of my invention is to provide an oscillating compactor ofthe foregoing character which is of relatively simple construction andwhich may be applied to a screed with ease and facility.

Generally speaking, the machine or apparatus of my invention consists,preferably, of a power driven tractor unit, a screed unit havingpreferably, a non-oscillatable or dead screed drawn b the tractor unit,and an oscillating compactor formed preferably in two sections which ismounted on the forward or lead end of the screed, which sections haveimparted thereto up and down and endwise movements in oppositedirections in unison lengthwise of the screed, and power meanspreferably associated with the screed and drivingly connected througheccentric connections with the sections of the compactor to impartthereto the desired oscillating movement at high speedsuch as fromapproximately 1000 to 1500 R. P. M.

The foregoing and other objects and advantages of my invention will beapparent from the following description and appended claims whenconsidered in connection with the accompanying drawings forming a partof this specification wherein like reference characters designatecorresponding parts in the several views.

In said drawings:

Fig. 1 is a side elevational view, partly broken away, of a machine orapparatus embodying my invention.

Fig. 2 is an enlarged vertical sectional view, partly in elevation andpartly broken away, taken substantially along the line 22 of Fig. 1,looking in the direction of the arrows.

Fig. 3 is a horizontal sectional view taken substantially along the line33 of Fig. 2, looking inthe direction of the arrows.

Fig. 4' is an enlarged fragmentary detail perspective view illustratingthe relationship of the central portion of the oscillating compactor ofmy invention with the material being applied to the road bed.

Fig. 5 is a detail front elevational view, partly broken away, of afragment of the compactor and screed; and showing the compactorsections, blades or plates in their closed and lowermost position; and

Fig. 6 is a view similar to Fig. but showing the sections or portions ofthe oscillating compactor in different positions.

Before explaining in detail the present invention it is to be understoodthat the invention is not limited in its application to the details ofconstruction sand .arrangement of parts illustrated in theaccompanyingdrawings, since the invention is capable of other embodiments and ofbeing practiced or carried out in various ways. It is to be understoodalso that thephraseology or terminology employed herein is 'for thepurpose of description and not of limitation, and it is not intended tolimit' the invention claimed herei beyond the requirements" of thepriorart.

Referring now particularly to the drawings, in Fig. 1 thereof there isshowmas-a'whole-atlfl a power driven tractor unit, a trailing screedunit, shown as a whole at H, and an oscillating compactor unit, shown asa whole at I2.

' The: screed unit it! is connecte'dinany suitable manner to the rearend of the tractor unit i0 :so asto be -drawn:along over the surface bysaid tractor unit. The screed unit I I, at'its lower :portion, comprisesa pair ofspaced channels (3 which carry'cross bars !l4'-which lattersupport adjusting rods secured at their lower ends to --angles'l-'6carried:by thescreed member li-l. The :upperends of'the rrods- Iii-arethreaded and extend through bearing sleeves BIB which are supported bythe cross bars [4 and which carry nuts l e-engaging thesleeves; The rodsi5landr-nuts l9 provide means for adjusting thesscreed member I'EI :tothe desired crown. Additional means,

shownas a whole a't 21l, seeiFig.:3,-arezprovided at-opposite endsof'thechannelsl3iand serve to tilt or adjust the screed 'l-| angularly withrelation to *the surface. The forward-or lead end: of the screed isnormally higher than its rear or following portion. These adjustmentsand the means for effecting Ithem are substantially the same as thosedisclosed in the' copending applicationo'f Ober't Mandt and Arnold S.Millikin, 'Seria lNuznber 565,306, :now'-Patent'No..2A-73;961.

The screed 'IT is provided-at its forward edge with a reinforcing angle2| which extends "the full length of the screed. The forward or uprightflange of theangle 2 provides a-wear'platezfor the oscillating compactorto be discussed-in detail -blow.

The upper flanges of the channels I3 carry cross bars 22', four suchbeing :shown in Figs. 2 and 3. Thecross bars'zz carryzat their forwardends dependingbearing brackets '23 which support pivot pins 2 Eachof'ithepivot. pins 24 carries a depending flink or pendulum 25 which isconn'ected at its lower end :hy'a-pin 2'4; to the portions or sectionsl2a of the oscillatingtcompactor unit :2. Thus, thesections or plates1|?a of the oscillating compactor unit are suspended t-from' the screedunit for oscillating'or pendulum-- like movement inopposite directionslengthwise o'ffthe screed l l andcrosswise 'ortransversely of themachine.

Each of the plates ormembers' [2a is'provided in its-outer "face and atits inner end with a bevelled portion P21), see particularly Fig. 4.These bevelled portions 'I2b,-when the plates [2a are moved toward oneanother, cooperate to crowd out stones or other objects which might tendto interfere withthe proper functioning of the apparatus.

Sui-table means is provided for oscillating the plates or members 1211of the compactor so as to impart to said members both up and down andendwise movement. Such means, as shown, comprises an electric motor 21mounted in suitable manner upon the channels I3. The motor shaft carriesa pulley 28 which is drivingly connected with a larger pulley 29 throughthe medium of a drive belt or chain 30. The pulley 29- is mounted upon ahorizontal :driven shaft 3| which is journalled in suitable bearings inthe channels 13. The driven shaft 3| carries at its forward end a pairof cam members or eccen- .trics.32 .each.-of which has a connecting rod33 .carrying on its outer end a concentric connection or member 34. Eachof the members 34 is mounted upon a short shaft 35 carried by a bracketor support 36 which is mounted upon the upper portion of the compactorplate I2a .and secured thereto by bolts or the like 31. It will beunderstood that one such bracket 36 is rigidly attached to each of theplates IZa and that the eccentrics or cranks 32, 33, 34 connect thedriven shaft "3| "with the =oscillatable plates-12a.

ed upon the forward end of the screed unit in anyzsuitable'manner, as b-brackets 39,'see Fig. 3. The lower end of the guard plate extendsinwardly and rearwardly at 38a'and terminates adjacent the front face'ofthe oscillating "plates 42a. Thisguard or plate 38 serveszas means forpushing the loose material ahead and protects 'the mechanism foroperating the oscillating compactor members 12a.

Floating side plates or forms 40 are mounted upon'thezmachineat oppositeends of the screed :unit lrl. lhese plates, asseen in Fig.1,-arepprovided with vertical slots '41 with which bolts 42 "cooperateto permit them to have free up .and :dowmrrrovement-over the unevenroad-surfaces at opposite sides of the'machine-beyond and adjacent totheends of-the screed unit. The plates 40 provide means movable'with themachine for de- "terrnining-.thev side-edges of-the newly laid mate-.rial. The-screed ll extends throughout the entire width or spacebetween the forms or plates 40. With all known prior art machineswherein the screeds themselves were oscillated, the screeds could' notbe long enough to bridge the space between the side plates or forms,there being spaces 'left between their ends and said 'side plates orforms. For this reason, finishing operations were required to beperformed on the edgesof the new surface to correct the irregular 'oruneven edges of said surface.

The power means, namely the electric motor which is operativelyconnected to the plates or members |-2a of the oscillating compactorunit throughthe driving connections above-described, serves to move oroscillate the members In =endwise toward and away from one anotherlengthwise -of the screed H, the eccentric or crank connections and thedepending support- .ing links or pendulum-like connections to theplates, imparting to said plates a combined up and down and endwisemotion in unison and at high speed, the speed ranging from approximately1000 to 1500 .R. P. M. This oscillating or swinging movement of thecompactor members performs a wipingoperation on the surface of the newlylaid material and the up and down movement in addition to the endwisemovement causes 'a compaction of said material. As pre viousty stated,the bevelled portions l2b in their movement toward one another crowd outstones or other objects which might have a tendency'to enter :the spacebetween ::the members IZa.

A: stationary guard plate orshield 3 B is mount- While I have shown onepreferred form of mechanism for operating the oscillating compactor ofmy invention, it will be understood that other mechanism may be employedfor elfecting the necessary and desirable oscillating movement of theplates or sections of the compactor.

Having thus described my invention, what I claim is:

1. In a road surfacing machine, a screed unit, said screed unitincluding a dead screed member, side form plates mounted at the ends ofsaid screed member, compactor plates supported from said screed unit inend-to-end relationship at the forward side of said dead screed memberwithin said side form plates for engaging and compacting material as themachine moves forwardly before the material reaches said dead screedmember, supporting members suspended from said screed unit and connectedto both ends of each of said compactor plates for suspending said platesfor bodily swinging movement in vertical planes transversely of themachine; said compactor plates in one of their relative positions havingtheir adjacent inner ends substantially in contact and being of suchlength that their outer ends are spaced from said side form plates, andmeans for oscillating said compactor plates to produce bodily swingingmovement thereof relative to said dead screed member in the verticalplanes and to cause the adjacent ends of the compactor plates toalternately move away from each other and then towards each other and tocause simultaneous movement of the outer ends of said compactor platestowards and from said side form plates.

2. Structure according to claim 1 wherein said side form plates aresupported by bolt and slot connections from the screed unit for verticalfloating movement directly adjacent the ends of said dead screed member.

3. Structure according to claim 1 wherein said compactor plates havecooperating beveled edges on their forward faces at their inner adjacentends which engage stones tending to enter rearwardly between said endsand deflect them forwardly.

4. Structure according to claim 1 including a guard plate supported bythe screed unit and extending from side form plate to side form plateand overlapping the upper portions of said compactor plates.

5. Structure according to claim 1 wherein the suspending means for eachcompactor plate includes a pendulum link at each end of each platehaving its lower end pivoted thereto and its upper end pivoted to thescreed unit.

6. Structure according to claim 5 including power means for oscillatingthe plates in unison and at high speed, a power driven shaft connectedto said power means and adapted to be driven thereby, and eccentricconnections between said driven shaft and each of said plates.

GEBHARD JAEGER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,306,353 Reynolds June 10, 19191,386,348 Maxon Aug. 2, 1921 1,467,243 Fitzgerald Sept. 4, 19231,619,083 Maxon Mar. 1, 1927 2,138,828 Barber Dec. 6, 1938 2,199,074Jackson Apr. 30, 1940 2,241,299 Finley May 6, 1941 2,244,297 HeltzelJune 3, 1941 2,248,247 Nichols July 8, 1941 2,254,743 Jackson Sept. 2,1941 2,332,687 Baily Oct. 26, 1943 2,351,592 Barber .1 June 20, 1944

